"Mark had been part of a Christian cult throughout his childhood and adolescence, so when he showed up as a freshman at Bob Jones University (BJU), he came face to face with a slightly larger slice of humanity. I emphasize “slightly” because BJU students’ beliefs and lifestyles still make up a minuscule percentage of Americans, and especially, of the world’s inhabitants.

Even at BJU, however, Mark discovered a few discrepancies between his beliefs and and those of most BJU faculty and students. We can’t both be right, he realized, but we’re both sure we’re right and we both have Bible verses to prove we’re right.

Suddenly, it dawned on him. If one of us are wrong, we could both be wrong. All of this — the Christian faith as a whole, and heck, even God’s existence — could be one big construction of our imaginations...